#10171D#10171D

#10171D is a very dark, near-neutral cyan. Relative luminance 0.008; OKLCH L 20.0% C 0.016 H 244.6°. Best body text is #FFFFFF at 18.07:1 contrast (WCAG AA passes).

Color values

HEX	#10171D
RGB	rgb(16, 23, 29)
HSL	hsl(208, 29%, 9%)
HSV	hsv(208, 45%, 11%)
CMYK	cmyk(44.8%, 20.7%, 0%, 88.6%)
CIE-LAB	lab(7.33, -1.21, -5.25)
CIE-LCH	lch(7.33, 5.38, 256.99°)
OKLab	oklab(20.04% -0.0069 -0.0145)
OKLCH	oklch(20.04% 0.016 244.6)
XYZ	xyz(0.7418, 0.8116, 1.2797)
Luminance	0.0081 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10171D #1D1610

analogous

#101D1D #10171D #10111D

triadic

#10171D #1D1017 #171D10

tetradic

#10171D #1D101D #1D1610 #111D10

square

#10171D #1D101D #1D1610 #111D10

split-complementary

#10171D #1D1011 #1D1D10

monochromatic

#0B1014 #0B1014 #10171D #263644 #3C566C

Accessibility & contrast

On white

18.07

#10171D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#10171D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10171D

18.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10171D	#FFFFFF	#000000	##FFFFFF
##10171D	1.00	18.07	1.16	18.07
#FFFFFF	18.07	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15171D

Deuteranopia (green-blind)

#13161D

Tritanopia (blue-blind)

#0C1819

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #10171d;
/* rgb */ color: rgb(16, 23, 29);
/* oklch */ color: oklch(20.0% 0.016 244.6);

Tailwind

colors: {
  custom: {
    50: '#4e5358',
    500: '#10171d',
    950: '#000000',
  },
}

SCSS

$custom: #10171d;
$custom-light: #4e5358;
$custom-dark: #000000;

JSON

{
  "hex": "#10171d",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 29
  },
  "hsl": {
    "h": 207.692,
    "s": 28.889,
    "l": 8.824
  },
  "oklch": {
    "l": 0.20041,
    "c": 0.01605,
    "h": 244.6
  },
  "luminance": 0.00812
}

Semantic roles & 50–950 ramp

primary

#10171D

secondary

#524337

accent

#9063C5

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010203

muted

#777878

Preview Lab

Preview with #10171D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →